Family revenge and redemption costume drama with lots of mystery. Both FL are blamed for their step mom’s miscarriage and sent away. They return years later to redeem their reputation and expose the truth. Likewise, their grandmother dote on their and their only “backing” in the family.
Both dramas have Zhang Wan Yi as 1st ML. Both have some similar aspects, as fake sibling romance/cousins romance and also love triangle.
FLs were mistreated by their families growing up. Finally they become strong. There're some politics parts in both, MLs become ministers in the court.
Clever female lead, the father favors the cruel, hypocrite concubine, female lead is the grandmother's favorite.
Both have very similar male and female leads in personalities and capabilities. Both male leads give off the impression of being weak, but are very intelligent and have built up their resources/intelligence network over time. Female leads are cunning and lovable. There is both a political and family plot, and most importantly, the dynamics between the leads, trust, and teamwork are exceptional with little to no miscommunication.